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CVE Record

CVE-2018-12933: PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (out-of-bo...

PlayEnhMetaFileRecord in enhmetafile.c in Wine 3.7 allows attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact because the attacker controls the pCreatePen->ihPen array index.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-12933 is a Wine 3.7 flaw where a specially crafted enhanced metafile record can write outside expected memory bounds. The stated impact is denial of service, with possible unspecified other impact. Business urgency depends on whether Wine processes untrusted Windows graphics or documents in your environment.

Executive priority

Treat as a targeted remediation item, not an enterprise emergency, unless Wine is used to process untrusted files at scale. The main confirmed risk is service disruption; broader impact is possible but not specified by the sources.

Technical view

The issue is in PlayEnhMetaFileRecord in enhmetafile.c. The CVE states the attacker controls the pCreatePen->ihPen array index, enabling an out-of-bounds write. Public sources identify Wine 3.7 and reference upstream Wine commits and a WineHQ bug, but the bundle provides no CVSS score or CWE classification.

Likely exposure

Exposure is most plausible on systems running Wine 3.7 or downstream Wine builds that include the vulnerable enhmetafile.c behavior, especially where untrusted EMF content is opened or rendered through Wine.

Exploitation context

The bundle does not show CISA KEV listing or confirmed active exploitation. It includes a WineHQ bug attachment, suggesting a reproducer may exist, but no exploitation details should be inferred beyond the CVE description.

Researcher notes

Key uncertainty is impact severity. The CVE describes out-of-bounds write and possible unspecified impact, but provides no CVSS, CWE, affected CPEs, or confirmed exploitation evidence. Validate patch status against upstream Wine commits and downstream package metadata.

Mitigation direction

  • Update Wine to a vendor or distribution release containing the referenced upstream fixes.
  • Review WineHQ commits b6da3547 and 8d2676fd for patch inclusion in your build.
  • Check Ubuntu or distribution package advisories for backported Wine fixes.
  • Avoid processing untrusted EMF or Windows document content through unpatched Wine builds.
  • Prioritize remediation where Wine handles external customer, email, or downloaded files.

Validation and detection

  • Inventory endpoints, servers, and automation images running Wine.
  • Identify Wine versions and downstream package build revisions.
  • Confirm whether enhmetafile.c includes the referenced upstream Wine commits.
  • Review workflows that open untrusted EMF or Windows graphics content through Wine.
  • Check monitoring for Wine crashes linked to metafile processing.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2018-12933 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.